Grammy award-winner Meghan Trainor, 24, is currently a judge on Foxs's The Four, a singing competition like The X Factor with a twist.

Four talented singers fight to defend their spot on stage as they're challenged by new performers.

During an episode last Thursday, contestant Jason Warrior was unseated as one of The Four, and so the singer took it upon himself to confront the All About That Bass singer mid-show.

As he was being eliminated, he told the blonde: "I really love you dearly and I respect everything you do, but sometimes you say things to us that hurt us."

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SHOOK: Host Fergie was visibly shocked

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Jason approached the starlet and held her hand, while continuing: "Sometimes you say things that are hurtful, but I still love you."

He then began to belt out her hit single Like I'm Gonna Lose You, leaving Meghan and host Fergie visibly shocked.

The camera also zoomed in on audience members' faces, who were also shaken.

Security were eventually called, in an effort to remove Jason from the stage.